Portable game machine



FIG. 1 is a front, top and right side perspective view of a portable game machine showing our new design;

FIG. 2 is a bottom, rear and left side perspective view thereof;

FIG. 3 is a front, top and right side perspective view for reference with a cap removed thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a left side elevational view thereof; and,

FIG. 9 is a right side elevational view thereof. 

The ornamental design for the portable game machine, as shown and described. 